How to use Partition Operators in LINQ: Part 2

As my previous article you learn about first two partition operators Take,and Skip. Now in this article we see the working of SkipWhile, and TakeWhile operators.

• First we discuss about the SkipWhile operator it skip element in a sequence as long as the specified condition remains true and then returns the remaining elements. In this example, we will skip the all numbers from starting till we don't find the number which is divisible by 4.

        EXAMPLE CODE          

          Module Module1
                Sub Main()
                    Dim numbers() = {29, 13, 3, 20, 69, 38, 66, 17, 12, 90}
                    Dim Remaining = numbers.SkipWhile(Function(a) a Mod 4 <> 0)
                    Console.WriteLine("All numbers after the number which is divisible by 4:")
                    For Each a In Remaining
                        Console.WriteLine(a)
                    Next
                    Console.ReadLine()
                End Sub
           End Module

           OUTPUT    

                                            

• The last operator is TakeWhile operator it grabs elements to a specified position in the sequence till the specified condition is true and returns the grabbed elements. In this example we will take the number from starting until a number come which is less than its position in the array.

        EXAMPLE CODE

           Module Module1
                Sub Main()
                    Dim values() = {2, 7, 8, 4, 9, 2, 6, 7, 2, 0}
                    Dim numbers = values.TakeWhile(Function(a, index) a >= index)
                    Console.WriteLine("All numbers which is greater than its index position in array:")
                    For Each a In numbers
                        Console.WriteLine(a)
                    Next
                    Console.ReadLine()
                End Sub
           End Module

           OUTPUT

            

CONCLUSION

This article shows the working of partition operator with while condition by two sample examples.